Beverage urn



May 19, 1953 5. J. RAITERI 2,638,839

BEVERAGE URN Filed March 2'7, 1948 4 Sheets-Sheet l 46@f "U 43 n 56 E1 Zmnentor /j 16 Wm y 3 s. J. RAITERI 2,638,839

BEVERAGE URN Filed March 27, 1948 4 s t s 2 Zhwentor MJ7%WMS May .19, 1953 s. J. RAITERI 2,638,339

BEVERAGE URN Filed Mardh 2'7, 1948 v 4 Sheets-Sheet 5 h 3nnentor 4 Sheets-Sheet 4 S. J. RAITERI BEVERAGE URN May 19, 1953 Filed March 27, 1948 T llllll T lllll I I Il .2 2 Zmnentor Patented May 19, 1953 UNITED STATES PATENT OFFICE 5 Claims.

This invention relates to a beverage urn, particularly to an urn for use in restaurants for making coffee, furnishing hot water for tea, and so forth, and has for an object to provide a simple and effective structure for making cofiee, furnishing hot water for tea, and so forth, and which will be semi-automatic.

Another object is to provide a structure in which the coffee is made by water seeping through the ground coffee, so that the coffee grounds are not Suspended in the hot water.

A further object is to provide an improved means for controlling the drawing of coffee or water or other liquids from. the urn or associated containers.

With the foregoing and other objects in view, I have devised the construction illustrated in the accompanying drawings forming a part of this specification. It is, however, to be understood the invention is not limited to the specific details of construction and arrangement shown, but may embody various changes and modifications within the scope of the invention.

In these drawings:

Fig. 1 is a partial front elevation and partial vertical section of my improved urn;

Fig. 2 is a detail side elevation showing a door structure;

Fig. 3 is a section of the upper part of the main container of the urn on a somewhat enlarged scale;

Fig. 4 is an elevation of the valve control mechanism, looking from the left of Figs. 1 and 3;

Fig. Sis a detail elevation showing the valve control in one position;

Fig. 6 is a top plan view of the holder for ground coffee removed from the urn;

'10, and showing the pipe connections;

Fig. 12 is. a detail section. of a portion of this casing. substantially on the line 12-42 of Fig. 11;

Fig. 13 is a vertical section of the inner member of this control device;

Fig. 14 is a transverse section thereof, substantially on line |4l& of Fig. 13-;

Fig. 15 is a top plan view of a. portion of the base supporting the main unit and showing an electrical heating unit;

Fig. 16 is a front elevation thereof; Fig. 17 is a section substantially on line "-41 of Fig. 16;

Fig. 18 is a side elevation looking from the right of Fig. 16;

V Fig. 19 is an end view of a heater base for the main container of the urn showing a modified construction and arranged for gas heating;

Fig. 20 is a front elevation of the device of Fig. 19;

Fig. 21 is ,a side elevation looking from the right of Fig. 20;

Fig. 22 is a plan view of one of the side. plates of the gas heater of Fig. 19, and

Fig. 23 is a. section on an enlarged scale of a portion of a plate of Fig. 22.

The device comprises a composite urn including a main container land smaller auxiliary containers 2 and 3, the main container I being for holding coflee and water for making the coflee, the smaller container 2 being for hot water for furnishing this plain hot water when desired, as for example, in makingtea, and the container 3 for milk' or cream, and all three are associated and mounted on a common base 4 which may contain the heating units and controls for them for maintaining the proper ternperatures for liquids in the containers :l and 2, and also may be used for keeping various articles warm and also for making toast for toasted sandwiches, as will be more fully described later.

The main container 1, as illustrated, comprises a cylindrical body 5, preferably of suitable metal, closed at the top by a suitable cover 6. Inside this body is a coffee'container 1 which may be of any suitable material, such,-ior example, as metal or glass, preferably the latter, and this container is spaced from the bottom 8 of the container l to leave a water space 9, and it is also spaced from the sides of the body 5 so that it is surrounded by a water space I0. It is also of,.,less height than the body 5, so that there isstill another water space H above the container 1. In this coffee container 1 is a transverse wall !2 provided with an opening 13 in which is mounted a coffee strainer and maker M, it being supported by a flange l5 resting on the wall [2. Above this coffee strainer and maker is a chamber [6 to which leads an opening I! through the side of the body 5, this opening being closed by one or more curved sliding doors M which permit access to the chamber 5 for insertion and removal of the strainer and maker 14 and also for placing ground coffee in this strainer and maker through the opening l9 at the top.

Projecting downwardly from the top wall of this chamber it is a water pipe 20 carrying and communicating with a sprinkler 2! including discharge nozzles 22 which are preferably directed laterally at an angle so that when water flows through them it produces an impulse action to rotate the nozzles about the of the supply pipe 25 and to distribute the water more uniformly over the coffee grounds in the strainer and coffee maker I4. This sprinkler 2| also includes an upright sleeve or pipe 23 telescoped over the water supply pipe '20 for longitudinal sliding'movement thereon, and is provided in its side wall with a longitudinal slot 24 with a lateral offset 25 in one end, there being a projection 25 on the pipe 23 extending into this slot so as to permit the nozzles 22 to be raised to a position above the strainer and coffee maker M. as indicated in dotted lines Fig. 1, and be retained therein by pin 25 in offset 25 to hold the nozzle above and clear of the strainer |4 to permit free access to it for either insertion or removal of this strainer and coffee maker and placing of the coffee grounds in it, after which the ,nozzles may be readily lowered to the full line position for the operation of making the coffee. The supply pipe 20 extends through the top wall of container 7 over the space I3 and communicates with a control valve 21 to which is connected a funnel 28 open at the top in communication with the water in the chamber I the top ,edge of this funnel being on the water level 29 and therefore determines this level, and it will beunderstood that at any level between this level 29 and the highest level 30 water may flow in through the funnel 28 and through the spray nozzles 22 whenever the valve 21 is open. In the .position of Fig. 1 this valve is closed. It is open .in the position of Fig. 3. The water levels 29 and 33 are controlled by a float 3! in the space and this is connected with a lever 32 on the ,outside of the container provided with a fork .33 between which is a stop or projection 34 on .the arm 35 operating the supply control valve 35 in the supply pipe 3! having a downwardly discharging end portion within the space H similar to that shown at 38 in Fig. 3, and there may ,also be in the pipe 31 forwardly or below the valve 36 a hand shut-off valve 39. Below the valve 39 is a branch connection 40 also leading .into the space H with a downwardly directed ,discharge end 38, and in this pipe branch is a hand-operated cut-off valve 4|. By means of .valve 39 the branch containing the automatically .controlled valve 36 can be shut off, and by means of the branch 40 and valve 4| water may be sup- ;plied to container I independently of the automatic valve.

A spring 42 is connected to the valve lever 35, and is arranged to snap by a center of the movable valve element on operation of this lever 35 ,to give a snap action to the valve and also to hold it in the fully open or fully closed position. Also connected to the valve lever 35 is a stop rod 43 operating through a suitable guide 44 and con- .nected to a spring 45 tending to hold this stop -rod in its upper position with its upper end against a control rod 46. This rod extends through suitable guides 41 in the side of the con- ;tainer I and is connected by a flexible wire or connection 48 with the laterally extending arm .49 on the rotatable element of the valve 21. The free end of the rod 46 is provided with a handle '54 and on its underside is provided with a stop notch adapted to cooperate with the upper end of the stop rod 43 to hold the rod 46 in its outer position, as shown in full lines Fig. 3. A spring 52 tends to shift the rod inwardly and close the valve 21, and there may also be an ad- ,ditional spring 53 on the stem of this valve to assist the spring 52 and insure this valve is turned to the closed position when the rod 46 is released.

When this rod 46 is in its innermost position, as shown in full lines Fig. l or dotted lines Fig. 3, the valve 2! is closed, but when it is drawn outwardly to the dotted line position of Fig. l or the full line position of Fig. 3, the valve 21 ,is open, permitting water from the space to flow through the funnel 28 and pipe or conduit 20 to the sprinkler nozzles 22, to be discharged on the ground close the valve 36.

coffee in the strainer and coffee maker l4. When pulled out to this position the rod 46 is held by the catch 43 seating in the notch 5| which therefore also holds the valve 21 in the open position. If the catch rod 43 is shifted downwardly to withdraw its free end from the notch 5|, it will release the rod 46 and permit the springs 52 and 53 to close the valve 27 and shut off flow of water from the space to the sprinkler.

The strainer and sprinkler M has a frustoconical lower portion 54 which has an imperforate bottom wall 55 and the side walls include removable screen panels 56 which form strainers to permit the water to pass through from the ground cofi'ee 5? but retain these grounds in the coffee maker. With this arrangement improved coffee making action is secured, because the hot water from the sprinkler nozzles 22 is spread over this ground coffee and seeps down through it and then up out the strainers 55 dropping over the outer lower edge of the conical portion 54 into the lower portion of the coffee container 1, where it is retained as shown at 58, and, of course, as it seeps through the coffee grounds it absorbs and extracts the coffee flavor and oils and soluble ingredients from the ground coffee. As this container l'is surrounded by hot water in the spaces 9 and Ill this coiiee extract is maintained in a heated condition and may be drawn oli for beverage purposes.

The water level 30 is controlled automatically by the float 3| after the valve 36 is opened to supply water to the container after the valve 2! has been closed. When the level reaches the upper limit 30, the float 3| through the lower arm of the fork 33 acting on the stop 34 swings the valve arm 35 up to the position of Fig. 4 to The Water level therefore remains stationary until the valve 21 is opened by means of the hand operated rod 45, as previously described, permitting the water to flow through the funnel 28 to the sprinkler 2| and after the water level reaches the line 29 at the .top of this funnel, dropping of the float 3| with the water level causes the upper arm of the fork 33 to reach the stop 34 on the valve stem 35 and swing it downwardly to open the valve 36 and supply more water to the space At the same time this action lowers the catch rod 43, releasing the hand operated rod 46 to permit the valve 21 to close and remain closed until again opened by pulling the rod 46 outwardly.

Within the base 4 and under the bottom of the container is a heating means 59. This may be either a gas or electric heater, that shown in Fig. 1 being a gas heater, as indicated by the flames 50, the heat impinging against the bottom wall 8 of the main container and mantaining its contents heated to the proper temperature at substantially boiling. The gas supplied to the heater is controlled by any suitable means, as indicated diagrammatically at BI, and if desired there can be a suitable thermostat in the Water space l0 controlling the gas supply to maintain the temperature of the water uniform and at the proper elevation. The thermostat is not shown in the drawing as it can be of any convcntional type oi thermostat control used for heating elements of this type. This particular heating unit, however, comprises upright laterally spaced rectangular chambers or spaces 62 for slices of bread in making toast, the flame E9 of the gas burner being in intermediate upright relatively narrow passages, 63 between them, the walls of these passages preferably being plates 64; (Fig. 22) provided with a series of slots or openings I55 formed preferably by punching the plate and forcing the sides laterally somewhat, as shown in Fig. 23, to permit the heat from the gas flame to impinge on the sides of the slices of, bread in the spaces 62 to toast it, the projections, however, holding the slices spaced from a the body of the plate 64. Automatic means, not

shown, may be employed if desired to eject the toast and sound av sginal when the bread is properly toasted, such, for example, as clock controlled mechanism. The hot gases pass upwardly and impinge against the bottom 8 of the main container I and there may or may not be an exit flue leading to a chimney flue, as found (is-- sirable. In the center portion of this heater 59 is a wider chamber 66 containin a perforated horizontal compartment or holder 6'! forming a sandwich toaster. The front of the base 4 with this heater is provided with one or more doors 6B permitting access to the heating unit and for inserting slices of bread in the chambers of the toasting unit and removing them. The spaces on the right or left of the heating unit may be used as warming spaces or as spaces to keep food hot, and there may be doors 69 leading to these spaces.

Mounted on the base 4- closely adjacent the main container I is the auxiliary or smaller container 2 for hot water for supplying plain hot water for any purpose, such, for example, as making tea. There is a heating coil 19 com municating at its opposite ends with the lower part of this container 2 for circulation of water through it, the coil being located in a recess II in the bottom of the container 1 and exposed to direct heat from the heating unit 59, either gas or electric, whichever is used, to heat and maintain the water hot in container 2. On the opposite sideand supported on the base is a similar auxiliary container 3 for milk. or cream.

Each of the containers I, 2. and 3 is connected with a single draw-off valve It which is a. fiveway control valve operated by a handle I3 with a suitable indicator I4 shown in Fig. 9, cooperating with a pointer I5 movable with the handle. It will be seen. that in the difierent positions as indicated, the valve will draw either a normal amount of coffee for mixture with cream when in the left position, milk in the nextposition, and black coffee in the next position at one side of the intermediate ofi posiiton, and in the next position on the other side of the off position tea water from the container. 2, and in the next position plain water from the container I. To eiiect these controls the device I2 is shown as constructed in Figs. 8 to 14.. This dispensing or draw-01f control comprises an outer casing I6 including a cylindrical body portion and. a conical lower portion I! provided with discharge opening I8 in its lower end. The cylindrical body wall is provided with a series of openings I9, 80,. I

Ill, 82 and 83 suitably spaced and located for the desired control functions and connected by suitable pipes or conduits to the containers I, 2 and 3. The lower opening I9 is connected by a conduit 84 with the container 2. The next openbe drawn from the container 58.

ing is connected by a conduit with the water space 9 in the main container I, while the opening 83 is conected by a conduit 86 with the milk or cream container 3. The coffee container I is connected by the conduit 81 to the openings M and 32, which openings, as shown in Figs. 10 and 12, are located one above the other and connected by a short conduit 88, leading from the conduit 8'! to the lower opening 82. Within the casing I6 is the movable valve element 89 of substantially the same shape as the casing I5 including a cylindrical body and a conical lower portion 90 provided with a discharge opening 9| in alignment with the opening I8, as shown in Fig. 8. This member fits in the member I5, but may turn therein. It has a closed top wall 92 which is connected by a stem 93 with the operating handle '13 to be connected together by a suitable bolt 94. Above the top wall 92 of the movable element is a spring or corrugated oisc structure 95,. between this top wall and the diaphragm 95 clamped against the end of casing I6 by a. capSI threaded on the casing. This diaphragm closes: the top of the casing and carries the indications 98 of I the indicator I4. The spring structure 95 presses the movable valve member 89 downwardly against the conical. lower part of casing I6 to make a tight leak-proof fit between them and provides a friction to hold the valve in difi'erent positions to which it is shifted by handle I3. The cap 91 may be removed to permit removal of the inner valve member 89 to permit easy cleaning of this member and other parts of the device.

On the inner side of the movable valve member 99 are mounted a series of short nozzles or pipes 39, I80, I9 I, 102 and I93 secured to the inner wall of the member and each communicatin with an opening through the side wall, and which openings to these various nozzles are on the level with one of the openings 19 to B3 in the valve casing. Each nozzle extends downward toward the discharge opening so as to deliver any liquid flowing through it closely adjacent this opening, as shown in Figs. 8, 13 and 14. The nozzle 99 is connected to an opening the valve 8:9 on the level with the openin 83 from pipe connection 85 to the milk container or urn 3. The opening to the nozzle ms is on the level with the opening 81, and that of nozzle IilI is on the level with the opening 82, so that both of these nozzles may be connected to the pipe t1 leading from the coiiee container. The opening to the nozzle I02 is on the level with the opening 86, so that it may be connected to the water space of the main um I by pipe '39. The nozzle m3 is on the level with the opening 79 connected by pipe 8 4 to the hot or tea water container 2. Therefore, it will be evident that by turning the valve member 89 by the handle '53, these various nozzles may be brought into alignment with the various openings in the valve casing 76 and the pipes leading from. them to the various liquid; containers, depending on what liquid it is desired to draw from the device. Thus, for example, when the handle I3 is turned to bring the pointer over the indication I94, all the various nozzles in the valve are out of alignment with the conduits. leading to the valve and the valve is in the off position where all conduits are closed. If you move the handle to the right to bring the pointer over indication Illfi, then the nozzle or conduit I! is in alignment with the opening 8i and black cofiee will If the handle is moved to the next position over indication I06, conduit 59 is opposite the milk. conduit 96 and 7. inilk will be drawn from the'container 3. If moved still further to the position Ifil'l, then conduit I66 is in alignment with the opening 82 and coffee may be drawn for the milk already drawn. If the handle is moved to the left to bring the pointer to the position I08, then the conduit I93 is in alignment with the opening is and tea water is drawn from the container 2. When the handle is moved still further to the position I99, conduit I62 is brought into alignment with the opening 80 and plain water may be drawn from the water space I I. This is the water from the container 2 for making tea and the draw-off connections from it are kept separate from that connected with the water space IQ of the main container I so that there is no danger of contaminating the water from the container 2 with cofiee.

The coffee maker It is an entirely new development for this device. As shown in Figs. 6 and 7, the bottom 55 is closed and the sides above this are inclined or tapered with openings through it covered with removable fine mesh screens 56, and these are located at the lower part ofthe downward passage I ia. The ground coffee indicated at 57 is placed in this device on the bottom 55 and as the spray water is directed onto it from the nozzles 22 the ground coffee soaks it up, the water absorbs the coffee flavor and other soluble ingredients of the ground coffee and then passes up and out the screens 53 so that water is maintained the proper length of time in contact with the ground cofiee to secure this action, and there is no danger of the grounds being carried through the screens with the water.

' The devices for heating the container I and maintaining it at the proper temperature are shown in Figs. 1 and to- 23. This may be either an electrical or gas heater or a combination of the two. The device of Figs. 15 to 18 is an electric heater indicated as a whole at I I0, mounted inthe base 4 immediately under the main container I. It may comprise several electric heating units, one being a coil I I I immediately under the bottom of the container I, and other units I I2 in upright rectangular compartments II3 extending between the top supporting member IM and the supporting base II5. These compartments I I3 are substantially the same as those shown at 63 for the gas type of heater and are spaced laterally to provide spaces Ilfi between them open at the front for insertion of slices of bread to be toasted, the sides of the chambers II3 preferably being provided with horizontal bars I I! to keep the bread spaced from the walls of the members II3. provided with openings or slots II8 behind the bars I IT to permit direct radiation from the heating units to toast the bread. Heat from the units I I2 impinges either directly against the bottom wall of the container I or the supporting wall I IS for it, so as to heat the water in this container and maintain it at the proper temperature. There may be also provided in the central part of the heater a sandwich toaster I (similar to toaster 67 of the gas type of heater) open at the front for insertion of a sandwich to be toasted and it may also have heating units in the base portion I2I thereof for the toasting operation, the heat from this unit also heating the main container I. These units may be controlled by any suitable controlling means, such, for example, as a hand control knob indicated at GM in Fig. 1.

If gas heat is used it is of substantially the same construction and arrangement as that of These walls may also be 8. the electric heater. It is shown more in' detail in Figs. 19 to 23, and is also shown as being in position in Fig. 1. This is mounted between the main container I and the base support I22, as indicated in Figs. 1 and 20, and is indicated as a whole by the element I23, the lower end of the container I being seated in the top wall I24. It comprises the rectangular laterally spaced upright hollow members 63 corresponding to the members II3 of the'electric heater, and they are laterally spaced to provide spaces 62 for insertion of slices of bread for toasting, corresponding to the spaces H6 of the electrical type heater, and open at the front in back of the doors 68 of the base 4. Burners for the gas flame are indicated at the'bottom of the members 63, as indicated by the dotted lines 60, and the heat from these flames passes up from the members 63 and heats the bottom of the container I. The side walls of the members 63, as indicated in Figs. 22 and 23, may have slots or openings 65 for heat from the flames to impinge on the bread for toasting it, and they may be formed by lancing and forcing the walls laterally as at 63 to form lugs or bars to maintain the bread spaced from the side plates. Also at the center is a sandwich toaster, as indicated at 61, similar to the toaster I20 of the electric form, with a suitable gas burner in its base I25 for toasting a sandwich and also assisting in heating the container 1. These gas burners may be controlled by any suitable means (not shown) through operation of the hand control knob BI.

In operation of the device water is fed to the main container I through the supply pipe 31, and this may be controlled by the hand valves 39 and 4!, but ordinarily it is controlled through the automatic valve 36. When the water reaches the upper level 30 the valve 36 is automatically closed by the float 3I and the water allowed to heat from the heating means in the base 4. Then when it is desired to make coffee the valve 2'! is opened by the operator pulling outwardly on handle 46. This permits heated water to flow through the funnel 28 and the nozzles 22 onto the coffee grounds 5'! in the coffee maker and strainer I4, which of course has been previously placed in this strainer through the side openings I1, and the nozzles 22 lowered to the full line position of Fig. 1. Opening of the valve 21 permits the water to flow through these nozzles from the funnel and be distributed by them onto the ground coffee, which flows slowly through them, absorbing the various soluble ingredients and flows upwardly and outwardly through the screens 56 and dovm over the lower edge of this strainer structure into the container 58. This action continues until the water level reaches the level 29 of the top of the funnel 28, at which time the flow of the water automatically stops, it being understood this level is controlled by the level of the top of the funnel. During this time the float 3| has followed down with the water level, and at this point it opens the valve 36 permitting fresh water to be fed into the container I from the pipe 31 and it also trips the catch 43, 5|, permitting the valve 21 to close, so that no more water passes through the funnel 28 to the ground coffee until the fresh water has been heated and the valve 21 again opened by the operator. The various liquids may be drawn off through the dispensing valve 12, as previously described.

It will be understood from the above that this construction and arrangement provides a simple and effective urn for restaurants and the like, and one in which the operation of making the coffee and maintaining it at the proper temperature is very easily controlled. The various liquids may be readily drawn by the single drawofi valve, simplifying this operation and saving time, as it is simply necessary to swing the same handle to the different positions for drawing off the various liquids as desired. Also, the device is very efiicient because the means for heating the coifee and the water for making it may be also used for making toast or toasted sandwiches and keeping other articles warm. Also, as all the various elements are in a single unit it is very effective in the saving of space.

Having thus set forth the nature of my invention, I claim:

1. A device of the character described comprising a container for hot water, means for heating the water in said container, a coffee container in the first container and spaced from the walls thereof to provide a water space, a coffee maker mounted in the coffee container comprising a holder for ground coffee including an imperforate base and inclined side walls comprising screening means inclined upwardly and inwardly from the periphery of said base and an entrance opening above said holder, sprinkler means for feeding water through said opening to the ground cofiee, and means for feeding Water from the first container to the sprinkler.

2. A device of the character described comprising a container for hot water,means for heating the water in said container, acoffee container in the first container provided with a closed top wall spaced below the top of the first container to form a water space, a cofiee maker in the cofiee container comprising a holder for ground cofiee including an imperforate base and inclined side walls comprising screening means inclined upwardly and inwardly from the periphery of said base and an entrance opening above said holder, a sprinkler for feeding water through said opening to the ground coffee, and a valve controlled conduit leading from the sprinkler through the top wall of the coffee container and having an inlet opening in the water space.

3. A device of the character described comprising a container for hot water, means for heating the water in said container, a coffee container in the first container provided with a closed top Wall spaced below the top of the first container to form a water space, a coffee maker in the coffee container comprising a holder for ground cofiee including screening means, a conduit leading from the coffee maker through the top wall of the cofiee container and provided with an entrance opening at a given level therein communicating with the water space, a control valve in said conduit, 9. supply pipe for supplying water to the first container, a control valve in said pipe, a fioat in the first container and operable between a high water level spaced above the entrance to the conduit and a lower level at said entrance, an operative connection from the fioat to the valve in the supply pipe, manual means outside the first container for opening the valve in the conduit to the cofl'ee maker, spring means tending to close the latter valve, 9, releasable means for holding the valve in open position, and means controlled by the float to release said holding means.

4. A device of the character described comprising a container for hot Water, a coffee container in the first container spaced from its top wall to form a water space, a cofiee maker in the cofiee container including a screened holder for ground coilee, a conduit leading from a given level in the water space to said coffee maker, a control valve in said conduit, a supply pipe leading to the water space, a control valve in said pipe, a float in the water space connected to the latter valve to open and close it and operating between a high level spaced above the entrance to the conduit and a low level at said entrance, a manual control connected to the conduit valve for opening it and extending to the exterior of the first container, spring means tending to close said conduit valve, and a catch cooperating with said manual control to maintain the conduit valve open and releasable by said fioat to permit this valve to close when the water reaches the lower level.

5. A device of the character described comprising a container for hot water, a coffee container in the firstcontainer spaced from its top wall to form a water space, a coffee maker in the coffee container including a screened holder for ground coffee, an open topped funnel in the water space arranged with its top on a given level, a conduit leading from said funnel to the coffee maker, a control valve in said conduit, a float in said water space operating between the level of the top of the funnel and a. higher level above this funnel, a water supply pipe leading to the first container, a control valve in said pipe controlled by said float, manual means for opening the conduit valve, spring means tending to close said latter valve, and a catch for holding the conduit valve open and connected with the float for operation thereby to release the conduit valve to cause it to be closed when the water reaches the lower level.

STEPHEN J. RAITERI.

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